The cost of an article is Rs. 1200. It is marked up by 50% and then a discount of 40% is given. Find the selling price. MCQ with Answer and Explanation

Explanation:
Original x, xy=144. 0.9x(y+4)=144 → 129.6 + 3.6x =144 → 3.6x=14.4 → x=4, reduced 3.6. Option C 3.6? But 3.24 is there. Check: x=4, reduced 3.6. So answer C. I'll set option C Rs. 3.6.

Explanation:
0.3x = 90 → x = 300.

Explanation:
Third=100, first=80, second=65; (65/80)×100 = 81.25%.